Siemens sinamics dcp - 5.1.2 EMC-compliant installation of SINAMICS DCP (installation instructions)

Electrical connection
5.1 EMC-compliant installation
SINAMICS DCP
Operating Instructions, 09/2019, A5E34382853K
37
SINAMICS DCP devices satisfy the requirements for interference emission and interference
immunity defined in
EN 61800-3 for the second environment (Category C3) and those in the
generic standards
EN 61000-6-2 and EN 61000-6-4.
NOTICE
Using the DCP in a residential environment
In a residential environment, this product can cause radio-frequency interference, which
may make interference suppression measures necessary.
5.1.2 EMC-compliant installation of SINAMICS DCP (installation instructions)
General information
In order to ensure electromagnetic compatibility (EMC) in rugged electrical environments and
adhere to the standards required by the relevant legislating body, the EMC rules listed below
should be followed during the construction and installation stages.
Grounding of the DC link
The DC link does not have to be grounded. (for a 30 kW device, only from product version
02).
Rules for EMC-compliant installation
1
All metallic parts of the cabinet must be connected with one another through a large
surface area
with a good electrical connection (not paint on paint!). Use contact or
scratch washers if necessar
y. The cabinet door must be connected to the cabinet using
the shortest possible ground strips (at the top, center, and bottom).
2
Contactors, relays, solenoid valves, electromechanical operating hours counters, etc., in
the cabinet and
- where applicable - in neighboring cabinets - must be provided with
quenching combinations such as RC elements, varistors, and diodes. These must be
connected directly at the appropriate coil.
3
Wherever possible, signal cables should be routed
1)
into the cabinet at one level only.
4
Unshielded cables in the same circuit (supply/return conductors) must be twisted where
possible, or the area between t
hem must be minimized, to avoid creating loop antennas
unnecessarily.
5
Connect spare wires to the cabinet ground
2)
at both ends. This achieves an additional
shielding effect.
6
Avoid unnecessary cable lengths in order to keep coupling capacities and in
ductances
low.